This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of WebGate WinRDS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the WESPPlayback.WESPPlaybackCtrl.1 control. The PlaySiteAllChannel method copies arbitrary data to a fixed-size stack buffer. This would allow an attacker to execute arbitrary code in the context of the browser.